<?xml version="1.0" encoding="utf-8"?>
<!-- A pattern section. The  pattern name is AVI File LIST -->
<template name="AVI File LIST">
  <!-- A template signature section. Alignment is 1. -->
  <signature align="1">
      <!-- A 4-byte signature at offset 0x00. -->
      <field offset="0x00">4C 49 53 54</field> <!-- ANSI: LIST -->
  </signature>
  <!-- A data section. Its name is AVI File LIST. This is the main data section. It is not shown in the parsing tree as a section (its name is ignored).-->
  <section name="AVI File LIST">
      <!-- The first 4 bytes are read and shown as an ANSI  string. -->
      <field type="char" size="4" name="Signature: LIST"/>
      <!-- The current position is moved to the beginning of the file (4 bytes backward). -->
      <goto offset="-4"/>
      <!-- The first 4 bytes in the file are read and shown as an unsigned integer. The internal variable signature gets the value of the field. -->
      <field type="uint32" name="Signature LIST as unsigned integer" var="signature"/>
      <!-- A test against the condition (signature == LIST) -->
      <if test="signature == 1414744396"> <!-- ANSI: LIST -->
          <!-- The next 4 bytes are read and shown as an unsigned integer. The internal variable listSize gets its value. -->
          <field type="uint32" name="Size of the data in the list" var="listSize"/>
          <setvar var="endOfList" expr="offset + listSize"/>
          <field type="char" size="4" name="List type"/>
          <goto offset="-4"/>
          <field type="uint32" base="hex" name="List type as unsigned integer in hex format" var="listType"/>
          <!-- A test against condition (listType == movi) -->
          <if test="listType == 0x69766f6d"> <!-- ANSI: movi -->
              <!-- This chunk is not to be parsed. The current position is moved to the end of the chunk. -->
              <goto address="endOfList"/>
          </if>
          <setvar var="mediaType" expr="0"/>
        <repeat test="endOfList > offset - 8">
              <section name="CHUNK">
                  <field type="char" size="4" name="Chunk ID"/>
                  <goto offset="-4"/>
                  <field type="uint32" name="Chunk ID as unsigned integer" var="chunkId"/>
                  <if test="chunkId == 1414744396"> <!-- ANSI: LIST -->
                      <goto offset="-4"/>
       <field type="uint32" base="hex" name="LIST chunk ID as unsigned integer in hex format" as-offset="start_position + offset - 4" assigned-template="AVI File LIST"/>
                </if>
                  <field type="uint32" name="Size of the data in the chunk" var="chunkSize"/>
                  <setvar var="endOfChunk" expr="offset + chunkSize"/>
                  <!-- Rounding the value of the variable endOfChunk to a number divisible by 2. -->
                  <if test="endOfChunk &amp; 1">
                      <setvar var="endOfChunk" expr="endOfChunk &amp; 0xFFFFFFFE"/>
                      <setvar var="endOfChunk" expr="endOfChunk + 2"/>
                  </if>                   
                  <if test="chunkId == 1751742049"> <!-- ANSI: avih -->
                      <field type="uint32" name="Number of microseconds between frames"/>
                      <field type="uint32" name="Approximate maximum data rate of the file"/>
                      <field type="uint32" name="Alignment for data, in bytes"/>
                      <field type="uint32" name="Bitwise combination of zero or more of the flags"/>
                      <field type="uint32" name="Total number of frames of data in the file"/>
                      <field type="uint32" name="Initial frame for interleaved files"/>
                      <field type="uint32" name="Number of streams in the file"/>
                      <field type="uint32" name="Suggested buffer size for reading the file"/>
                      <field type="uint32" name="Width of the AVI file in pixels"/>
                      <field type="uint32" name="Height of the AVI file in pixels"/>
                      <field type="binary" size="16" name="Reserved"/>
                  </if>
                  <if test="chunkId == 1852994675"> <!-- ANSI: strn -->
                      <field type="char" size="chunkSize" name="Stream name"/>
                  </if>
                  <if test="chunkId == 1752331379"> <!-- ANSI: strh -->
                      <field type="char" size="4" name="Type"/>
                      <goto offset="-4"/>
                      <field type="uint32" base="hex" name="Type as unsigned integer in hex format" var="type"/>
                      <setvar var="mediaType" expr="type"/>
                      <field type="char" size="4" name="Handler (codec)"/>
                      <field type="uint32" base="hex" name="Flags"/>
                      <field type="uint32" name="Number of the first block of the stream that is present in the file"/>
                      <field type="uint32" name="Scale"/>
                      <field type="uint32" name="Rate"/>
                      <field type="uint32" name="Start time of stream"/>
                      <field type="uint32" name="Size of stream in units as defined in Rate and Scale"/>
                      <field type="uint32" name="Size of buffer necessary to store blocks of that stream"/>
                      <field type="uint32" name="Quality"/>
                      <field type="uint32" name="Sample size (number of bytes of one stream atom)"/>
                  </if>
                  <if test="chunkId == 1718776947"> <!-- ANSI: strf -->
                      <if test="mediaType == 0x73646976"> <!-- ANSI: vids -->
                          <section name="BITMAPINFOHEADER">
                              <field type="uint32" name="Number of bytes required by the structure"/>
                              <field type="int32" name="Width of the bitmap, in pixels"/>
                              <field type="int32" name="Height of the bitmap, in pixels"/>
                              <field type="uint16" name="Number of planes for the target device"/>
                              <field type="uint16" name="Number of bits-per-pixel"/>
                              <field type="uint32" name="Type of compression for a compressed bottom-up bitmap"/>
                              <field type="uint32" name="Size, in bytes, of the image"/>
                              <field type="int32" name="Horizontal resolution, in pixels-per-meter, of the target device for the bitmap"/>
                              <field type="int32" name="Vertical resolution, in pixels-per-meter, of the target device for the bitmap"/>
                              <field type="uint32" name="Number of color indexes in the color table that are actually used by the bitmap"/>
                              <field type="uint32" name="Number of color indexes that are required for displaying the bitmap"/>
                          </section>
                      </if>
                      <if test="mediaType == 0x73647561"> <!-- ANSI: auds -->
                          <section name="WAVEFORMATEX">
                              <field type="uint16" name="Waveform-audio format type"/>
                              <field type="uint16" name="Number of channels in the waveform-audio data"/>
                              <field type="uint32" name="Sample rate, in samples per second (hertz)"/>
                              <field type="uint32" name="Required average data-transfer rate, in bytes per second, for the format tag"/>
                              <field type="uint16" name="Block alignment, in bytes"/>
                              <field type="uint16" name="Bits per sample for the Waveform-audio format type"/>
                              <field type="uint16" name="Size, in bytes, of extra format information appended to the end of the WAVEFORMATEX structure"/>
                          </section>
                      </if>
                  </if>
                  <goto address="endOfChunk"/>
              </section>
          </repeat>
      </if>
      <if test="signature != 1414744396">
          <section name="Invalid LIST signature found">
          </section>
      </if>
  </section>
</template>